Question

Calcule o valor do x:
4x + 20 = 2x + 42

Answer 1

4x + 20 = 2x + 42

4x - 2x = 42 -20

2x = 22

x = 22/2

x = 11

Answer 2

4× + 20 =2× + 42
4× - 2× = 42 - 20
2× = 22
×= 22
2
×=11
Espero ter ajudado